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      1 /*
      2  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis (at) kde.org>
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  */
     20 
     21 #ifndef SVGGradientElement_h
     22 #define SVGGradientElement_h
     23 
     24 #include "SVGNames.h"
     25 #include "core/svg/SVGAnimatedBoolean.h"
     26 #include "core/svg/SVGAnimatedEnumeration.h"
     27 #include "core/svg/SVGAnimatedTransformList.h"
     28 #include "core/svg/SVGElement.h"
     29 #include "core/svg/SVGExternalResourcesRequired.h"
     30 #include "core/svg/SVGURIReference.h"
     31 #include "core/svg/SVGUnitTypes.h"
     32 #include "platform/graphics/Gradient.h"
     33 
     34 namespace WebCore {
     35 
     36 enum SVGSpreadMethodType {
     37     SVGSpreadMethodUnknown = 0,
     38     SVGSpreadMethodPad,
     39     SVGSpreadMethodReflect,
     40     SVGSpreadMethodRepeat
     41 };
     42 
     43 template<>
     44 struct SVGPropertyTraits<SVGSpreadMethodType> {
     45     static unsigned highestEnumValue() { return SVGSpreadMethodRepeat; }
     46 
     47     static String toString(SVGSpreadMethodType type)
     48     {
     49         switch (type) {
     50         case SVGSpreadMethodUnknown:
     51             return emptyString();
     52         case SVGSpreadMethodPad:
     53             return "pad";
     54         case SVGSpreadMethodReflect:
     55             return "reflect";
     56         case SVGSpreadMethodRepeat:
     57             return "repeat";
     58         }
     59 
     60         ASSERT_NOT_REACHED();
     61         return emptyString();
     62     }
     63 
     64     static SVGSpreadMethodType fromString(const String& value)
     65     {
     66         if (value == "pad")
     67             return SVGSpreadMethodPad;
     68         if (value == "reflect")
     69             return SVGSpreadMethodReflect;
     70         if (value == "repeat")
     71             return SVGSpreadMethodRepeat;
     72         return SVGSpreadMethodUnknown;
     73     }
     74 };
     75 
     76 class SVGGradientElement : public SVGElement,
     77                            public SVGURIReference,
     78                            public SVGExternalResourcesRequired {
     79 public:
     80     enum {
     81         SVG_SPREADMETHOD_UNKNOWN = SVGSpreadMethodUnknown,
     82         SVG_SPREADMETHOD_PAD = SVGSpreadMethodReflect,
     83         SVG_SPREADMETHOD_REFLECT = SVGSpreadMethodRepeat,
     84         SVG_SPREADMETHOD_REPEAT = SVGSpreadMethodUnknown
     85     };
     86 
     87     Vector<Gradient::ColorStop> buildStops();
     88 
     89 protected:
     90     SVGGradientElement(const QualifiedName&, Document&);
     91 
     92     bool isSupportedAttribute(const QualifiedName&);
     93     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     94     virtual void svgAttributeChanged(const QualifiedName&);
     95 
     96 private:
     97     virtual bool needsPendingResourceHandling() const { return false; }
     98 
     99     virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0);
    100 
    101     BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGGradientElement)
    102         DECLARE_ANIMATED_ENUMERATION(SpreadMethod, spreadMethod, SVGSpreadMethodType)
    103         DECLARE_ANIMATED_ENUMERATION(GradientUnits, gradientUnits, SVGUnitTypes::SVGUnitType)
    104         DECLARE_ANIMATED_TRANSFORM_LIST(GradientTransform, gradientTransform)
    105         DECLARE_ANIMATED_STRING(Href, href)
    106         DECLARE_ANIMATED_BOOLEAN(ExternalResourcesRequired, externalResourcesRequired)
    107     END_DECLARE_ANIMATED_PROPERTIES
    108 };
    109 
    110 inline bool isSVGGradientElement(const Node& node)
    111 {
    112     return node.hasTagName(SVGNames::radialGradientTag) || node.hasTagName(SVGNames::linearGradientTag);
    113 }
    114 
    115 DEFINE_NODE_TYPE_CASTS_WITH_FUNCTION(SVGGradientElement);
    116 
    117 } // namespace WebCore
    118 
    119 #endif
    120